Clamp for drills and the like.



U. H. OSLUND. CLAMP I'OR DRILLS AND THE LIKE.

APPLIOATION FILED OUT. 31, 1910.

Patented July 30,1912.

- 7. 72mph)" (/rZav UNITED STATES PA ENT OFFICE.

CHARLES H. OSLUND OF WQBCESTEB, MASSACHUSETTS, ASSIGNQR TO THE, DUFFMANUFACTURING COMPANY, OF PITTSBURGH, PENNSYLVANIA, A CORPORATION OFPENNSYLVANIA.

CLAMP FOB DBILLS AND LIKE.

Specification of mm. Patent. Patented uly 30, 1912.

Original applications filed December 4, 1908, Serial No. 465,969, andFebruary 21, 1910, Serial 1T0. 544,989.

Divided and this application filed'october 81, 1910. Serial No. 589,905.I

To all whom it may concern:

Be it known that I, CHARLES H. OSLUND,

a citizen of the United States, residing at,

, Worcester, in the county of Worcester and State of Massachusetts, haveinvented a new and useful Clamp for Drills and the Like,

and the like and especially for holding track I forced -ject laterallying drawings,

drills.

The principal objects of the invention are to provide a simple andpracticable means adapted to be clamped to 'a rail or the like andsuitable for supporting a drill in position to drill into the shank ofthe rail; to provide a construction thereof in which the jaws shall bereadily adjustable and the clamping jaw can be rapidly and efiicientlyup into clamping position in a very simple manner; and to .provideaconstruction having a horizontal bar adapted to profrom the top of, therail or other device on which the clamp is placed and support the drilleither in a fixed or adjusted position near the end thereof.

The invention also involves improvements in details of construction aswill appear hereinafter. 1

Reference is to be had to the accompanyin which- Figure 1 is a sideelevation of a preferred embodiment of the invention showing itappliedto arail, and Fig. 2 is afsimilar view showing a modification.

The form shown in 1 is dividedout of my Patent No. 963,317 and the formshown in Fig. 2 from the other patent above mentioned. In Fig. 1 theinvention is shown as applied to a drill casing 10 having a sleeve 11projecting therefrom at the top in which rotates the drivingshaft 12.This driving shaft extends through the sleeve into the casing andconnectlons 9 inside, illustrated in dotted lines, operatealongitudinally movable member 13 forholding two jaws.

. tive, position the sliding the drill 14. It will be understood, ofcourse,

that as the power is transmitted from the shaft 12 to the member 13, thelatter is not only rotated but fed forward either in the form shown inmy above mentioned Patent No. 963,317 or' in any other desired way; Thesleeve 11 which proj ects from the casing and which is supportedthereby, or by which the casing can be supported, is employed for theconnection of the casing with the clamp.

For this purpose a cylindrical bar 15 is secured to the sleeve by meansof a bolt 16 or the like. This bar is provided with a screwthread'17 onwhich an adjustable clamping jaw 18 is mounted and adapted to be securedby a bolt 19 or the like. On the opposite end this bar is turned downand provided with a screw-thread 20 on which a nut '21 is adjust-ablymounted. This nut has a pivot 22 for a lever 23 which isprovided with acam surface 24 engaging a projecting bearing surface 25 on a sliding jaw26. It will be seen that when this lever is brought down the cam surface24 will exerta powerful force upon it to clamp the work between the Itwill be seen also that the jaw 18 can be adjusted by turning it on itsscrew-threads, and'that the nut 21 also can be adjusted forward andback. When the lever 23 is lifted to bring it back to inopera-v backwith it by means of so jaw 26 isbrought a link 27 thereon having a slot28 through which a pin 29 on the jaw 26 passes. I

As so far described the as in the original Patent that the pin 29 is Theconstruction 0. 963,317, except to that as far as the function of theis.

concerned as the 'link serves to hold these arts are the same thereshown on the lever.- shown herein is equivalent two parts together, butin addition I nowprovide anew function. I do this with the presentconstruction by; simply adding a hook 40 to each link 27 ,one of thesebeing located on each side. 'Thesehooks are shown integral with thelinks and as extending out beyond hooks are as follows :-.-The hooks areenthe top ofthe rail in position to'engage the rail when the lever 23 sdrawn back. -The operation and function of these tirely idle when thedrill is in operation but when it is desired to unclamp it, the lever 23being raised until the cam 2 f leaves the bearing surface 25, the hooks40 will be drawn to the right in Fig. 1. During this time the pivot 41by which the links are connected with the lever 23 swings about thepivot 22 as a center, until the hooks 40 come into contact with the edgeof the rail. From this point on of course the hooks cannot move fartherto the right, and neither can the pivot 41. Consequently the pivot 41becomes the center about which the links swing, and the pivot 22 movesinwardly to ward the rail. This necessarily carries the whole clamp withit and results in withdrawingthe drill from the hole in the rail.

This is an important function and is secured in an extremely simple andconvenient manner.

In the form shown in Fig. 2, a different form of drill is shown but thatis immaterial and the same reference numerals are used. Mounted on thesleeve 11 is a split collar 30 adapted to be fixed in position by ascrew 31. This collar has a horizontal passage therein for receiving abar 32 which is firmly clamped in the same. On this bar is a fixed jaw33 for gripping one side of the top of a rail or the like. The bar isscrewthreaded at the end and provided with a nut 34:, having a handle 35by which the companion jaw 36 can be moved back and forth. This nut hasa project-ing collar 37 and the jaw 36 has a hook 38 engaging it so thatthis jaw moves back and forthwith thenut.

The operation of both forms of the invention will be obvious from whathas been stated concerning the same.

While I have illustrated and described two preferred embodiments of theinvention, I am aware that many other modifications can be made thereinby any person skilled in the art without departing from the scope of theinvention as expressed in the claims. Therefore, I do not wish to belimited to all the features of construction shown, but

What I do claim is 1. In a device of the class described, thecombination of a casing, a sleeve extending therefrom, a driving shaftjournaled in saidsleeve, a tool holding member at right angles to thedriving shaft, a bar secured to said sleeve and projecting parallel withthe tool holding member beyond the end of the casing, a jaw adjustablealong said bar, a second jaw freely slidable on the bar and having aprojection, an adjustable nut on the bar having a pivot thereon, a levermounted on said pivot and provided with a cam surface for engaging saidprojection,

and means connected with the lever and second jaw whereby when the leveris turned into inoperative position the second jaw will be moved withit.

2. In a device of the class described, the combination of a casing, asleeve extendin therefrom, a driving shaft j ournaled in said sleeve, atool-holding member at right-angles to the driving shaft, a bar securedto said sleeve and projecting parallel with the tool holding member, ajaw adjustable along said bar, a second jaw freely slidable on the barand having a projection, an adjustable nut on the bar having a pivotthereon, and a lever mounted on said pivot and provided with a camsurface for engaging said projection.

3. In a drill, the combination of a casing, a sleeve supported at oneend therein, a driving shaft extending through said sleeve into thecasing, a screw-threaded cylindrical bar detachably secured to saidsleeve independently of the casing, whereby it can be set at anydistance therefrom, and projecting away from the casing, a jaw on saidbar, an opposite jaw on the bar movable along the screw-threads, alongitudinally movable rotatable member in the casing for holding adrill, and means inclosed in the casing for transmitting power from thedriving shaft -to said member to rotate and feed it in the direct-ion inwhich said bar projects.

4. In a device of the class described, the combination of a drivingshaft, a tool holding member at right angles to the driving shaft, :1bar parallel with the tool holding member, a jaw adjustable along saidbar, a second jaw freely slidable on the bar and having a projection,the bar having a pivot thereon, a lever mounted on said pivot andprovided with a cam surface for en aging said projection, and meansconnecte with the lever and second jaw whereby when the lever is turnedinto inoperative position the second jaw will be moved with it.

5. In a device of the character described, the combination of a drillingmachine, a work clamp connected therewith comprising a lever adapted toswing on a pivot, a jaw in position to be operated by said lever and toengage one side of a rail or other ar ticle to be drilled, and a hookconnected with said lever and adapted to be operated thereby to engagethe o posite side of the rail or the like when the liaver is drawn backto release the jaw.

6. In a Work clamp, the combination of a pair of jaws adapted to engageopposite sides of an article to be clamped, a bar to which said jaws areconnected, an operatin lever pivoted on said bar and adapted to d1-rectly operate one of said, jaws toward the article to be clamped, ahook pivotally connected with said lever and in position to engage theside of the article to be clamped opposite to that which the jawoperated by the lever engages, whereby when the lever v is drawn back torelease the last named jaw whole toward the side of the article to beclamped on which said hook is located.

it will draw the hook into engagement with the rail and cause the firstnamed pivot to wltnesses. swing about the connection between the CHARLES.H. OSLUND. hook and lever so as to force theelamp as a Witnesses:

, Ammo E. RAY, v C, Fomms'r WEssoN.

In testimon whereof I have hereunto setmy hand; in t 0 presence of twosnbsenbi'ng

